How to Convert US pints to US gallons (pt to gal)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert us pints into us gallons by hand, with examples and a quick-reference table.
The conversion
To convert us pints to us gallons, multiply the value by 0.124999934. To go the other way, divide by the same number (or multiply by 8.0000042268). For a quick estimate, multiply by about 0.12.
US gallons = us pints × 0.124999934
Worked examples
- 3 pt = 0.375 gal
- 12.5 pt = 1.5625 gal
- 75 pt = 9.375 gal
US pints to US gallons table
| US pints | US gallons |
|---|---|
| 1 pt | 0.125 gal |
| 2 pt | 0.25 gal |
| 5 pt | 0.625 gal |
| 10 pt | 1.25 gal |
| 20 pt | 2.5 gal |
| 25 pt | 3.125 gal |
| 50 pt | 6.25 gal |
| 100 pt | 12.5 gal |
| 250 pt | 31.25 gal |
| 500 pt | 62.5 gal |
| 1,000 pt | 124.9999 gal |
Common questions
Is pt to gal exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the US gallons to US pints converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Background
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the US pints to US gallons Converter or browse all volume converters.
Run your own numbers: US pints to US gallons Converter